To be clear, I'm talking about the Custom Vibrolux Reverb (which I think is what you were talking about as well). I've heard that aside from it being a little noisy (hissy) it's pretty sweet. There are mods that give it more headroom and make it quieter and a little more "blackface."
The other one I'm looking at is a '63 Vibroverb RI (this is the amp Nuno used on Waiting For The Punchline). Always LOVED that tone.